PEP 3123: Provide forward compatibility with Python 3.0, while keeping
backwards compatibility. Add Py_Refcnt, Py_Type, Py_Size, and
PyVarObject_HEAD_INIT.
diff --git a/Include/object.h b/Include/object.h
index 0f6ff77..daba4b6 100644
--- a/Include/object.h
+++ b/Include/object.h
@@ -84,6 +84,9 @@
_PyObject_EXTRA_INIT \
1, type,
+#define PyVarObject_HEAD_INIT(type, size) \
+ PyObject_HEAD_INIT(type) size,
+
/* PyObject_VAR_HEAD defines the initial segment of all variable-size
* container objects. These end with a declaration of an array with 1
* element, but enough space is malloc'ed so that the array actually
@@ -108,6 +111,9 @@
PyObject_VAR_HEAD
} PyVarObject;
+#define Py_Refcnt(ob) (((PyObject*)(ob))->ob_refcnt)
+#define Py_Type(ob) (((PyObject*)(ob))->ob_type)
+#define Py_Size(ob) (((PyVarObject*)(ob))->ob_size)
/*
Type objects contain a string containing the type name (to help somewhat
@@ -364,21 +370,21 @@
/* access macro to the members which are floating "behind" the object */
#define PyHeapType_GET_MEMBERS(etype) \
- ((PyMemberDef *)(((char *)etype) + (etype)->ht_type.ob_type->tp_basicsize))
+ ((PyMemberDef *)(((char *)etype) + Py_Type(etype)->tp_basicsize))
/* Generic type check */
PyAPI_FUNC(int) PyType_IsSubtype(PyTypeObject *, PyTypeObject *);
#define PyObject_TypeCheck(ob, tp) \
- ((ob)->ob_type == (tp) || PyType_IsSubtype((ob)->ob_type, (tp)))
+ (Py_Type(ob) == (tp) || PyType_IsSubtype(Py_Type(ob), (tp)))
PyAPI_DATA(PyTypeObject) PyType_Type; /* built-in 'type' */
PyAPI_DATA(PyTypeObject) PyBaseObject_Type; /* built-in 'object' */
PyAPI_DATA(PyTypeObject) PySuper_Type; /* built-in 'super' */
#define PyType_Check(op) \
- PyType_FastSubclass((op)->ob_type, Py_TPFLAGS_TYPE_SUBCLASS)
-#define PyType_CheckExact(op) ((op)->ob_type == &PyType_Type)
+ PyType_FastSubclass(Py_Type(op), Py_TPFLAGS_TYPE_SUBCLASS)
+#define PyType_CheckExact(op) (Py_Type(op) == &PyType_Type)
PyAPI_FUNC(int) PyType_Ready(PyTypeObject *);
PyAPI_FUNC(PyObject *) PyType_GenericAlloc(PyTypeObject *, Py_ssize_t);
@@ -599,7 +605,7 @@
#define _Py_DEC_REFTOTAL _Py_RefTotal--
#define _Py_REF_DEBUG_COMMA ,
#define _Py_CHECK_REFCNT(OP) \
-{ if ((OP)->ob_refcnt < 0) \
+{ if (((PyObject*)OP)->ob_refcnt < 0) \
_Py_NegativeRefcount(__FILE__, __LINE__, \
(PyObject *)(OP)); \
}
@@ -613,9 +619,9 @@
#ifdef COUNT_ALLOCS
PyAPI_FUNC(void) inc_count(PyTypeObject *);
PyAPI_FUNC(void) dec_count(PyTypeObject *);
-#define _Py_INC_TPALLOCS(OP) inc_count((OP)->ob_type)
-#define _Py_INC_TPFREES(OP) dec_count((OP)->ob_type)
-#define _Py_DEC_TPFREES(OP) (OP)->ob_type->tp_frees--
+#define _Py_INC_TPALLOCS(OP) inc_count(Py_Type(OP))
+#define _Py_INC_TPFREES(OP) dec_count(Py_Type(OP))
+#define _Py_DEC_TPFREES(OP) Py_Type(OP)->tp_frees--
#define _Py_COUNT_ALLOCS_COMMA ,
#else
#define _Py_INC_TPALLOCS(OP)
@@ -640,22 +646,22 @@
#define _Py_NewReference(op) ( \
_Py_INC_TPALLOCS(op) _Py_COUNT_ALLOCS_COMMA \
_Py_INC_REFTOTAL _Py_REF_DEBUG_COMMA \
- (op)->ob_refcnt = 1)
+ Py_Refcnt(op) = 1)
#define _Py_ForgetReference(op) _Py_INC_TPFREES(op)
#define _Py_Dealloc(op) ( \
_Py_INC_TPFREES(op) _Py_COUNT_ALLOCS_COMMA \
- (*(op)->ob_type->tp_dealloc)((PyObject *)(op)))
+ (*Py_Type(op)->tp_dealloc)((PyObject *)(op)))
#endif /* !Py_TRACE_REFS */
#define Py_INCREF(op) ( \
_Py_INC_REFTOTAL _Py_REF_DEBUG_COMMA \
- (op)->ob_refcnt++)
+ ((PyObject*)(op))->ob_refcnt++)
#define Py_DECREF(op) \
if (_Py_DEC_REFTOTAL _Py_REF_DEBUG_COMMA \
- --(op)->ob_refcnt != 0) \
+ --((PyObject*)(op))->ob_refcnt != 0) \
_Py_CHECK_REFCNT(op) \
else \
_Py_Dealloc((PyObject *)(op))